Anchorage device for closures



March 26, 1946. M SCHWARTZ ANCHORAGE DEVICE FOR A CLO-SURE Filed June 21. 1943 Patented Mar. 26, 1946 UNITED STATES PATENT OFFICE a. I 2,397,440.. I

ANCHORAGE DEVICE FOR CLOSURES Morris Schwartz, Chicago, 111.

Application June 21, 1943, Serial No. 491,589

3 Claims.

My invention relates to an anchorage device for a closure.

One of the, objects of my invention is to provide an improved anchorage device which will be rugged, durable and easily manipulated in use and simple and inexpensive to manufacture.

Further objects and advantages of the invention will be apparent from the description and claims.

In the drawing, in which an embodiment of my invention is shown:

Figure l is a plan view of a screw plug closure and anchor bar;

Fig. 2 is a section substantially on the line 2-2 of Fig. 1; I

Fig. 3 is a perspective view of the plug closure and anchor bar;

Fig. 4 is a plan view showing how the plug is blanked out from the sheet metal;

Fig. 5 is an axial sectional view similar to Fig. 2, showing a modified form of anchor bar; and

Fig. 6 is a section on the line 66 of Fig. 5.

The construction shown comprises a cupshaped screw plug l which may be formed from a fiat metal sheet 2, as shown in Fig. 4, having screw threads 3 cut or rolled therein, an internal threaded bushing ring 4 into which the screw plug is threaded, a gasket or packing 5 clamped between the outwardly-extending flange 6 of the plug and the outer face of the bushing ring 4, a container wall 1 having a sealed connection at 8 with the bushing ring, a chain anchor bar 9 secured to the plug by means of two of the four tool-engageable ears H) on the plug, and an anchor chain l l havinga swivel connection at l2 with the anchor bar.

This chain ll may be secured to any suitable part of the container to prevent the plug I from getting lost or misplaced when unscrewed from the bushing ring 4. The four hook-like ears l0 are formed integrally with the body portion of the sheet metal plug from the blank, as indicated at 10' in dotted lines in Fig. 4. It will be seen that these ears are formed of metal which would otherwise be scrap. These ears l0 extend upwardly from the flange 6 of the plug and are spaced apart circumferentially sufiiciently so that they may be easily struck by a hammer in loosening or tightening the plugs, or so that they may be engaged by the edges of a flat tool, such as a file, which may be placed so as to extend between the upwardly extendings ears. The ends of these cars are bent downwardly so that they extend into openings 13 formed in the ends of the anchor bar, thus holding the bar securely in place on the plug. If desired, the free ends of the ears [0 may be reduced in width somewhat to provide shoulders I4 adjacent the upper face of the anchor bar 9, to prevent the .bar from riding up on the cars.

It will be seen that the construction described provides an anchorage device which is rugged, durable and easily manipulated in use, and simple and inexpensive to manufacture. The toolengageable ears are spaced apart sufiicientlyso that they are easily accessible for tapping with a hammer. Due to the fact that the ears present a circular edge to the face of the hammer a firm impact is obtained.

The central portion of the anchor bar 9 may be depressed somewhat, as indicated at [5, so as to fit within the reduced'neck portion of the plug to aid in positioning the slots [3 with respect to the ends of the downwardly bent ears H! in assembly.

The construction shown in Figs. 5 and 6 is similar to that shown in Figs. 1-3, inclusive, except that the anchor bar is in the form of a bent wire l6 instead of a fiat bar. The central portion of the wire is deformed downwardly, as indicated at 11, to fit inside of the cup-like plug I to position the Wire in assembly. The central portion of the bar is flattened at [8 and is provided with an eye l9 for engagement with a cooperating eye 20 on the wire anchorage member 2|. The down-turned ends of the ears ID are notched out at 2| to receive the ends of the wire. With this'construction it will be seen that the wire Hi can have a swivel motion in the ears l0 and that the wire anchorage member has, in effect, a universal joint connection at 19 and 20 with the anchor bar.

Further modifications will be apparent to those skilled in the art and it is desired, therefore, that the invention be limited only by the scope of the appended claims. 4

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A closure for a container comprising a cup-- shaped body having external threads to be screwed into a threaded opening in the container and having an annular flange extending outwardly from the edge of the cup-shaped body, an anchor bar extending across the open end of the cup-shaped body and secured to said flange, and a connecting element secured to said bar, the ends of said bar having a swivel connection with said flange to enable the bar to swing about an axis transverse to the cup-shaped body.

2. A closure for a container comprising a cupshaped body having external threads to be screwed into a threaded opening in the container and having an annular flange extending outwardly from the edge of the cup-shaped body and thence upwardly, said flange having a pair of tool engageable ears circumferentially spaced thereabout and extending above the upper edge of said flange, an anchor bar extending across the open end of said cup-shaped body and lying below the upper edge of said flange and held in place thereon-by said ears, and a connecting element secured to said bar.

3. A closure for a container comprising a cupshaped body having external threads to be),

MORRIS SCHWARTZ. 

